Facsimile and static presentation processing – Facsimile – Facsimile system interface
Patent
1994-04-28
1995-09-26
Harvey, David E.
Facsimile and static presentation processing
Facsimile
Facsimile system interface
358406, 358455, 348674, H04N 140
Patent
active
054538459
ABSTRACT:
An image processing apparatus is disclosed which includes circuitry for selectively applying variable gamma corrections to an image signal during both on-line and off-line modes of operation. In the off-line mode, the apparatus operates to simultaneously correct image signals for non-linearities produced by both an input device and an output device. In the on-line mode, correction is made for the non-linearities of the input device and a separate correction is made for the non-linearities of the output device. Such operation allows the apparatus to process linear data in the on-line mode.
REFERENCES:
patent: 4394688 (1983-07-01), Iida et al.
patent: 4539593 (1985-09-01), Jufier et al.
patent: 4672466 (1987-06-01), Schimpf
patent: 4680641 (1987-07-01), Nakazawa
patent: 4827349 (1989-05-01), Ogata et al.
Haines, Fredrick J. "Understanding Gamma Correction" Video Systems pp. 20-24.
Jay, Frank, "IEEE Standard Dictionary of Electrical and Electronics Terms" Institute of Electronics and Electrical Engineers, p. 419 1984.
Dhake, Arvind M. "Television Engineering" Tata McGraw-Hill Publishing Co. 1980 pp. 73-75.
Cho Kenjiro
Nonoshita Hiroshi
Saito Seiji
Shigehara Yasuhisa
Canon Kabushiki Kaisha
Harvey David E.
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